#pragma once
#include "Thing.h"

namespace RoboidControl {

constexpr int MAX_THING_COUNT = 256;

/// @brief A participant is a device which manages things.
/// It can communicate with other participant to synchronise the state of
/// things. This class is used to register the things the participant is
/// managing. It also maintains the communcation information to contact the
/// participant. It is used as a basis for the local participant, but also as a
/// reference to remote participants.
class Participant {
 public:
  /// @brief The Ip Address of a participant. When the participant is local,
  /// this contains 0.0.0.0
  const char* ipAddress = "0.0.0.0";
  /// @brief The port number for UDP communication with the participant. This is
  /// 0 for isolated participants.
  int port = 0;

  /// @brief The network Id to identify the participant.
  /// @note This field is likely to disappear in future versions
  unsigned char networkId = 0;

  /// @brief Default constructor
  Participant();
  /// @brief Create a new participant with the given communcation info
  /// @param ipAddress The IP address of the participant
  /// @param port The port of the participant
  Participant(const char* ipAddress, int port);
  /// @brief Destructor for the participant
  ~Participant();

 protected:
#if defined(NO_STD)
  unsigned char thingCount = 0;
  Thing* things[MAX_THING_COUNT];
#else
  /// @brief The list of things managed by this participant
  std::list<Thing*> things;
#endif

 public:
  /// @brief Find a thing managed by this participant
  /// @param networkId The network ID for the thing
  /// @param thingId The ID of the thing
  /// @return The thing if found or nullptr when no thing has been found
  /// @note The use of the network ID is likely to disappear in future versions.
  Thing* Get(unsigned char networkId, unsigned char thingId);
  /// @brief Add a new thing for this participant.
  /// @param thing The thing to add
  /// @param checkId Checks the thing ID of the thing. If it is 0, a new thing
  /// Id will be assigned.
  void Add(Thing* thing, bool checkId = true);
  /// @brief Remove a thing for this participant
  /// @param thing The thing to remove
  void Remove(Thing* thing);
};

}  // namespace RoboidControl